Home / 2,758.37-3,805.97-1,638.90

Finding the Fourth Proportional to 2,758.37, 3,805.97 and 1,638.90

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Solution

The fourth proportional to 2,758.37, 3,805.97 and 1,638.90 is: 2,261.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.37 : 3,805.97 = 1,638.90 : x
  2. Step 2: Convert to fraction form
    2,758.37/3,805.97 = 1,638.90/x
  3. Step 3: Cross multiply
    2,758.37x = 3,805.97 × 1,638.90
  4. Step 4: Simplify right side
    2,758.37x = 6,237,596.04
  5. Step 5: Solve for x
    x = 6,237,596.04/2,758.37
  6. Step 6: Final answer
    x = 2,261.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.